Characteristics and Evolution of Devonian Reef Reservoirs in Guizhong (Central Guangxi ) Depression
详细信息
- 责任者：Wang Pengwan (Hangzhou Institute of Petroleum Geology ; PetroChina Exploration and Development Research Institute ; Hangzhou 310023 ; China) ; Yao Genshun
- 刊名：Geology in China
- 出版年：2011
- 卷期：38(1)
- 关键词：岩礁储集层 ; reef reservoirs ; 广西 ; Guangxi Province
- 页码：p.170-179
- 图表：6 illus., 2 tables, 23 refs.
- 分类号：1003
- issnNo：ISSN1000-3657
- isbnNo：CN11-1167/P
摘要
Devonian reef is developed in the Guizhong Depression, and drilling data of well GZ1 support the opinion that high quality biolithite and dolomite reservoirs do exist in the Guizhong Depression. It is suggested that the reservoir types can be classified into fissure type, fissure pore type and pore type. The depositional environment, diagenesis and tectoclase controlled the development of the beneficial reservoir. Nowadays reservoir space is mainly made up of burial emposieus and remaining pores, fissures and solution hollows. A study of diagenesis and geochemistry indicates that the porosity evolution was related to the oil accumulation, and that two stages of processes of oil reservoir formation might have occurred.
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